import json
import logging
import logging.config
import time

def init_and_get_logger():
    with open('config.json') as f:
        d = json.load(f)
    
    logging.config.dictConfig(d)
    logger = logging.getLogger(__name__)
    logger.setLevel(logging.INFO)
    return logger


def main():
    for i in range(1, 101):
        logger = init_and_get_logger()
        logger.info('Message no. %d', i)
        time.sleep(30)

if __name__ == '__main__':
    main()